Lighting system for self-propelled vehicles.



- H. J. BISHOP & J. K. DELANO, JR.

LIGHTING SYSTEM FOR SELF PROPELLED VEHICLES.

APPLICATION FILED MAY 3.1909.

Patented Mar. 29, 1910.

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HARRY J. BISHOP, RIVERSIDE, AND JAMES K. DELANO, J 3., OF CHICAGO, ILLINOIS,

.ASSIG-NORS, BY MESNE ASSIGNIEENTS, TO THE KINLEY MILANUFACTUBING GOM- PANY, A CORPORATION OF ILLINOIS.

LIGHTING SYSTEM FOR SELF-PROPELLED VEHICLES.

Specification of Letters Patent.

Patented Mar. 29, 1910.

. Application filed May 3, 1909. Serial No. 493,710.

propelled vehicles, and its object is to pro-.

vide an eflicient and economical lighting system for this purpose.

In the drawings, Figure 1 is a diagrammatic view of the lighting system and Fig. 2 is a section through a circuit breaker employed in the system. a

The generator 1 is driven from the engine of the vehicle in" any desired manner, and

its fields are difierentially wound with shunt coils 2 and series coils 3 of opposite polarity as indicated diagrammatically in Fig. 1.

v The end of series coil 3 .is connected with two wires 4 and 5, wire 4: connecting to blade .6 of the three bladed switch 9, and one magnet 15 of opposite polarity to magnet 11 and insulated from spring 12. The windlng 16 of magnet 15 is of comparatively low reslstance and one end of it is grounded to the frame of magnet" 15. Magnets-11 and 15 p are adapted to contant witli" each other, and

to. insure good electrical cbntact, their faces are copper plated and supplemental spring contacts 17 are provided. Winding 16'is connected by wire 18 to storage battery 19 which is also connected with the main generator line 20 by wire 19. 21 leads from wire 18 to blades 7 of the switch. A setscrew 11 is provided for regulatin the distance between magnets 11 and 15. rovision is made for connection withany of the coils of series winding 3 and a wire 22 is adapted to make connection A branch wire between a selected coil thereof and the contact 23 of switch 9. The shunt coils 2 are connected by wire 24 with blade 8 of switch 9. Wire 25 connects contact 26 of blade. 7 with lamp circuit 28, which is also connected with main generator wire 20 as indicated. Contact 27 of blade 8 is connected by wire 27 with main generator wire-20. A variable resistance 29 is also connected in series with shunt winding 2.

The shunt and series windings are so proportioned that a current of a given amperage is allowed on the line before the damag netizing action of the series field 3 begins to assert itself. Any excess of current generated by higher speeds, will weaken the field of the generator resulting in a constant output of current for great'v'ariations in speed.

The parts are so designed that at a prede termined voltage, sufficient to lightly charge the storage batteryfor lighting and for ignitionof the engine, the magnet 11 is sufficiently energized to draw it down to make contact with magnet 16, thus completing a circuit between the generator and the storage battery through the winding 16, which firmly holds the electromagnets together. The copper plated faces of magnets 11 and 15 insure good contact and prevent sticking due to residual magnetism. The current from generator 1 now passes from the frame of magnet 11 through the ground on the frame of magnet 15 to the winding 16 and thence to the storage battery 19. If the engine is slowed down below the speed for generating the predetermined voltage, or is' stopped through accident orby design, the

current will flow from the storage battery to generator 1 producing'a like polarity-in magnets 11 and 15, thereby allowing spring -12 to part the magnets and open the circuit 'at this point. Adjustment of the sensitiveness of magnet 11 to act at the predeter- ,mined.i voltage is made by means of screw; 11".

' With switch 9 open and the lamps out, re-

sistance 29 is in series with'shunt winding 2 cutting down its efiective'strength. Winding 3 has all its coils connected incircuit and being'of opposite polarity to winding 2 fur ther reduces .the strength of the field, thus reducing the output to the required ca acity. By closing switch 9 for-the pur ose ot lighting the lamps resistance 29 is ridged, giving full field 'strengthto shunt winding 2 1; out in the battery cuitsisubstantially as described.

and series windin 3 is bridged for a portion of its coils, t us reducing the opposition to the field of windings 2 and so bringmg up generator 1 to the capacity required to run the lighting load and also to keep storage battery properly charged. Thus it will be seen that by varying the number. of coils of winding 3 that are bridged and the resistance 29 the output of the generator may be accurately ad usted to suit the requirements. When the generator is stopped the storage battery 19 may be utilized for lighting the lamps. 1

'While we have illustrated and described the preferred construction for carrying our invention into effect, this may be varied somewhat without departing from the spirit of the invention. We therefore do not wish to be limited to the exact construction setforth but Wish to avail ourselves of such modifications and variations as come within the scope of the appended claims.

Having described our invention what we claim as new and desire to'secure by Letters Patent is: p

-1. In a lighting system, the combination of a compound wound generator having the series field winding opposed to the shunt; a lamp circuit adapted to be lighted by the generator circuit, an adjustable circuit adapted'to, bridge variable numbers of the seri windings;.and a common switch for closfig said '3. n a lighting system, the combination of a com ound wou'n .=generator having the d wmdmg;opposed. to .theshunt a' storage battery in the' gene'rator circuit; a reverse current and self-restoring cut out in the battery circuit; a lamp circuit adapted to be lighted by the generator current or the battery current; a resistance in series with the shunt winding; a circuit for bridging the shunt resistance; a circuit for bridging a portion of the series coils; and a switch for simultaneously closing said lamp circuit and said circuits for bridging the shunt resistance and said series coils, substantially as described.

4. In a lighting system, the combination of a compound wound generator having theseries field winding opposed to the shunt; a storage battery in the generator circuit; a reverse current and self restoring cut out in the battery-circuit; a lamp circuit adapted to be lighted by theigenerator current or the battery current; a variable resistance in series with the shunt Winding; a circuit for bridging the shunt resistance; a circuit for bridging a variable portion of the series coils; and aswitch for simultaneously closing said lamp circuit and said circuits for bridging the shunt resistance and said series coils, substantially as described.

5. In a lighting system, the combination of a compound wound generator having the series field winding opposed to the shunt; a storage battery in the generator circuit; a reverse current'and self restoring cut out in the battery circuit; .alamp circuit adapted to be lighted by the generator current or the battery current; a resistance in series with the shunt coils; means for bridging the shunt coil resistance when the lamps are lighted and means for bridging a portion of the series coils when the lamps are lighted, substantially as described.

In testimony whereof we have signed our nanfes to this specificationin the presence of two subscribing witnesses.

HARRY J. BISHOP.

JAMES K. DELANO; JR.

\Vitnesses:

B. G. RICHARDS, A. A. Orson. 

